The growth rate of China's broad money supply (M2) significantly exceeds the combined rates of economic growth and inflation, leading to a continuous rise in the ratio of M2 to GDP. This phenomenon is referred to as the "China Money Mystery." The explanation for this phenomenon involves several factors. Firstly, interest rate and exchange rate controls in the financial market lead to excessive increases in money demand. Secondly, financial repression results in excessive use of indirect financing and a lack of investment channels, further distorting money supply. Thirdly, the financial hoarding theory suggests that a large amount of money flows in the virtual economy rather than being invested in the real economy, thus failing to induce noticeable inflation. Finally, the applicability of traditional quantity theory of money in the modern credit money system is gradually diminishing, failing to explain the relationship between money supply and prices. By integrating these factors, a better understanding of the abnormal monetary supply phenomenon in China and its implications can be achieved.